PRICKLY, PROTEAN AND ELUSIVE, JAZZ PIANIST KEITH JARRETT IS AT THE PEAK OF A CAREER THAT HAS SPANNED BAROQUE AND BEBOP

ONSTAGE, KEITH JARRETT belies his cerebral, prickly reputation. Swept up in the trancelike flow of his jazz improvisations, he levitates from the piano stool like Jerry Lee Lewis, head thrust back and howling with pleasure. Beneath his fluid fingers, the keyboard ripples spontaneously, spinning out an endless series of riffs and variations, while his lyrical bassist, Gary Peacock, and elegant drummer, Jack DeJohnette, match him move for move. Heads nod approvingly as the melody is handed off from instrument to instrument, three men doing what they love best: making music with hand and heart.